Discover precision and durability with the Atop system replacement for the Doop Disc boot. This replacement kit includes a replacement disc reel knob system for both the left and right skate, featuring the Atop System. Designed to provide a custom fit and ensure long-lasting performance, this upgrade will help you conquer any adventure with confidence. Enhance your boots today with the reliable and efficient Atop system replacement, and experience the ultimate in skate customization and durability.